<template>
        <div class="login" :style="{backgroundImage: 'url(' + (config.background == undefined ? srcImage : JSON.stringify( config.background))+ ')'}">
        <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">{{config.title}}</h3>
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
                    <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
                </el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码" @keyup.enter.native="handleLogin">
                    <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
                </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="captchaOnOff && config.captcha">
                <el-input v-model="loginForm.captcha" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter.native="handleLogin">
                    <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img" />
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
                <el-button :loading="loading" size="medium" type="primary" style="width:100%;" @click.native.prevent="handleLogin">
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                </el-button>
                <span style="color:#707070">
                    演示账号：test 密码：test
                </span>
                <div style="float: right;" v-if="config.register">
                    <router-link class="link-type" :to="'/register'">立即注册</router-link>
                    &nbsp;|&nbsp;
                    <router-link class="link-type" :to="'/forget'">忘记密码</router-link>
                </div>
            </el-form-item>
        </el-form>
        <!--  底部  -->
        <div class="el-login-footer">
            <span v-if="config.bottom==null || config.bottom==undefined">Copyright © 2021 zenka.com All Rights Reserved.</span>
            <span v-else v-html="config.bottom"></span>
        </div>
    </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import { getConfigMsg } from "@/api/system/setting";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";

export default {
    name: "Login",
    data() {
        return {
            codeUrl: "",
            cookiePassword: "",
            loginForm: {
                username: "",
                password: "",
                rememberMe: false,
                captcha: "",
                key: "", // 验证码key
            },
            // 系统参数
            config: {
                logo: undefined,
                title: undefined,
                background: undefined,
                captcha: undefined,
                register: undefined,
                bottom: undefined,
            },
            //默认背景图
            srcImage: require("../assets/images/login-background.jpg"),
            loginRules: {
                username: [
                    {
                        required: true,
                        trigger: "blur",
                        message: "请输入您的账号",
                    },
                ],
                password: [
                    {
                        required: true,
                        trigger: "blur",
                        message: "请输入您的密码",
                    },
                ],
                code: [
                    {
                        required: false,
                        trigger: "change",
                        message: "请输入验证码",
                    },
                ],
            },
            loading: false,
            // 验证码开关
            captchaOnOff: true,
            // 注册开关
            register: false,
            redirect: undefined,
        };
    },
    watch: {
        $route: {
            handler: function (route) {
                this.redirect = route.query && route.query.redirect;
            },
            immediate: true,
        },
    },
    created() {
        this.getCode();
        this.getCookie();
        this.getSystemConfig();
    },
    methods: {
        // 获取验证码
        getCode() {
            getCodeImg().then((res) => {
                this.captchaOnOff =
                    res.captchaOnOff === undefined ? true : res.captchaOnOff;
                if (this.captchaOnOff) {
                    this.codeUrl = res.data.image;
                    this.loginForm.key = res.data.key;
                }
            });
        },
        // 获取初始化系统参数（系统名称，logo，登录背景图等信息）
        getSystemConfig() {
            getConfigMsg().then((res) => {
                this.config = res.data;
            });
        },
        getCookie() {
            const username = Cookies.get("username");
            const password = Cookies.get("password");
            const rememberMe = Cookies.get("rememberMe");
            this.loginForm = {
                username:
                    username === undefined ? this.loginForm.username : username,
                password:
                    password === undefined
                        ? this.loginForm.password
                        : decrypt(password),
                rememberMe:
                    rememberMe === undefined ? false : Boolean(rememberMe),
            };
        },
        handleLogin() {
            this.$refs.loginForm.validate((valid) => {
                if (valid) {
                    this.loading = true;
                    if (this.loginForm.rememberMe) {
                        Cookies.set("username", this.loginForm.username, {
                            expires: 30,
                        });
                        Cookies.set(
                            "password",
                            encrypt(this.loginForm.password),
                            {
                                expires: 30,
                            }
                        );
                        Cookies.set("rememberMe", this.loginForm.rememberMe, {
                            expires: 30,
                        });
                    } else {
                        Cookies.remove("username");
                        Cookies.remove("password");
                        Cookies.remove("rememberMe");
                    }
                    this.$store
                        .dispatch("Login", this.loginForm)
                        .then(() => {
                            this.$router
                                .push({ path: this.redirect || "/" })
                                .catch(() => {});
                        })
                        .catch(() => {
                            this.loading = false;
                            if (this.captchaOnOff) {
                                this.getCode();
                            }
                        });
                }
            });
        },
    },
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    // background-image: url("http://192.168.10.123:8888/resource/HaiQiu-Admin/system/d29b64952d6be54627c7ebeab2af5248(1).jpg");
    background-size: cover;
}
.title {
    margin: 0px auto 30px auto;
    text-align: center;
    color: #707070;
}

.login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 400px;
    padding: 25px 25px 5px 25px;
    .el-input {
        height: 38px;
        input {
            height: 38px;
        }
    }
    .input-icon {
        height: 39px;
        width: 14px;
        margin-left: 2px;
    }
}
.login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
}
.login-code {
    width: 33%;
    height: 38px;
    float: right;
    img {
        cursor: pointer;
        vertical-align: middle;
    }
}
.el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
}
.login-code-img {
    height: 38px;
}
</style>
